Just got in my FFL5009D 4250~4500K and reflowed into an L50 Sol. I figured I'd share so beams and measurements since I haven't seen many yet.
Overall: significantly less rosy than the NTG50 4200K (and FFL5009R 4000K, I presume) with a dUV of around -0.004. Better R9 as well, but I'm not sure how accurate the Opple is for that. Objectively, the beam is much closer to neutral, and slightly wider in a 60 degree TIR optic.
by tocirahl